APPARATUS FOR GENERATING ELECTRICITY USING WATER MOVEMENT

An apparatus 2 for generating electricity from water movement comprises an electrical generator 4 with a housing 6, a rotor 8 and a stator 10; and a control means 12 which is configured to remove a defective part 14 in the electrical generator 4, and to receive a replacement part 16. The apparatus 2 includes transport means 18 for transporting the defective part 14 around the apparatus 2. This system allows the replacement of a defective part 14 without the need for divers even although the apparatus 2 in use is submerged at depth in the water. The control means 12 may include a turntable, so that the replacement part may be lowered in an orientation where it creates minimal drag, and then rotated into its in use orientation with the apparatus.